Which of the following statements about photochemical smog is wrong?
(i) It has high concentration of oxidising agents.
(ii) It has low concentration of oxidising agent.
(iii) It can be controlled by controlling the release of , hydrocarbons, ozone etc.
(iv) Plantation of some plants like pinus helps in controlling photochemical smog.
The answer is the option (ii) It has a low concentration of oxidising agents.
Explanation: Photochemical smog has a high concentration of oxidants since it comprises of , nitric oxide, formaldehyde, peroxyacetyl nitrate & acrolein. Photochemical smog causes serious health issues.